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From: "eggert at cs dot ucla.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/106947] New: -Waddress + bool + pragma generates
 meaningless diagnostic
Date: Wed, 14 Sep 2022 20:31:06 +0000
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X-Bugzilla-Version: 12.1.1
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106947

            Bug ID: 106947
           Summary: -Waddress + bool + pragma generates meaningless
                    diagnostic
           Product: gcc
           Version: 12.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: eggert at cs dot ucla.edu
  Target Milestone: ---

I found this while testing Gnulib with gcc (GCC) 12.1.1 20220507 (Red Hat
12.1.1-1) on x86-64.

Compile the following with "gcc -Waddress -S t.c":

#pragma GCC diagnostic ignored "-Waddress"
int s;
_Bool e =3D &s;
int
main ()
{
  int error =3D 0;
  {
    _Bool e1 =3D &s;
    if (!e1)
      error =3D 1;
  }
  return error;
}

The output is the meaningless diagnostic:

t.c: In function =E2=80=98main=E2=80=99:
t.c:2:5: note: =E2=80=98s=E2=80=99 declared here
    2 | int s;
      |     ^=